Win 10 , Adobe Acrobat and Edge

I have Win 10 pro   v1803 and Edge continues to hijack my PDF files.  Despite the basic temp solution of resetting the file association, each time windows updates it resets the default to Edge.  I have used a registry script,  This works well between windows updates.  However a more permanent fix is to stop Edge from launching by renaming the Edge launcher files in the Windows/SystemApps/Microsoft.MicrosoftEdge_8wekyb3d8bbwe folder.  There are two that I suggest you rename by adding OLD before the .exe.  The files are:

MicrosoftEdge.exe

MicrosoftEdgeCP.exe

Note that you will need t change permissions to rename the files.

Since doing this over 6 mths ago, I have had no problem with Edge hijacking my PDF files from Acrobat.

Search Microsoft – Official Home Page  for all things Microsoft

This is rather like the Adobe website - I have to fight off pressure to sign up to creative clod every time I want anything from their site!

Try going to "Set default Apps by file type" and selecting .pdf.  Clck on the Edge icon which inevitably displays, then select Acrobat/Reader.

This will not protect from major updates, but will keep Edge at bay for minor ones.